Chief Architect

Role Overview

• Serve as Legion’s senior-most hands-on technical authority for complex architecture, system design, and platform evolution.
• Personally dive into code, design documents, production incidents, performance bottlenecks, and implementation tradeoffs to diagnose root causes and guide technical direction.
• Lead the hardest technical decisions across AI systems, optimization engines, distributed systems, data architecture, reliability, scalability, security, and platform modernization.
• Write prototypes, reference implementations, architecture decision records, technical specifications, and design patterns where needed to unblock teams and establish clear direction.
• Make high-consequence technical decisions with incomplete information, balancing correctness, simplicity, speed, scalability, reliability, cost, and long-term maintainability.
• Challenge architectural drift, unnecessary complexity, weak abstractions, and short-term decisions that create long-term platform risk.
• Partner directly with Staff, Principal, and senior engineering leaders in design reviews, code-level discussions, and implementation planning.
• Define and own the long-term architecture for Legion’s AI-driven Workforce Management platform across application services, data infrastructure, ML systems, optimization engines, APIs, integration architecture, developer platforms, and enterprise-scale operations.
• Establish engineering-wide standards for system design, scalability, performance, reliability, extensibility, observability, security, and maintainability.
• Drive architecture for large-scale, multi-tenant SaaS systems serving complex enterprise customers with high availability, performance, security, and compliance expectations.

Requirements

• 15+ years of experience building and scaling large-scale software systems.
• Prior experience as a Chief Architect, Distinguished Engineer, Principal Architect, very senior Principal Engineer, or equivalent senior technical leadership role.
• Demonstrated success designing and scaling mission-critical, multi-tenant SaaS platforms for enterprise customers.
• Deep hands-on experience with large-scale distributed systems, cloud-native architecture, data platforms, APIs, event-driven systems, platform engineering, and high-availability production environments.
• Proven ability to operate as a hands-on technical leader who can credibly engage in code-level and design-level discussions with senior engineers.
• Experience making major architecture decisions for systems with high scale, high reliability requirements, complex domain logic, and long product lifecycles.
• Experience modernizing large production systems incrementally while maintaining uptime, backward compatibility, customer trust, and engineering velocity.
• Experience building or supporting AI, ML, optimization, decisioning, forecasting, or data-intensive products in production.
• Strong understanding of observability, incident response, performance engineering, reliability architecture, capacity planning, and operational excellence.
• Ability to communicate complex technical concepts clearly to engineering teams, executives, customers, and cross-functional partners.

Tech Stack

• Cloud
• Distributed Systems

Benefits

• Health Benefits
• Paid Time Off and Paid Holidays
• Equity
• Monthly Wellness Reimbursement
• Meal Vouchers